The Ohio Republican could be subpoenaed to testify about his exchanges with the then-president on the day the U.S. Capitol was attacked.
"This is what happens to people who tell the truth in Trump's America," said officer Michael Fanone.
"Just because she loves drama doesn’t mean I have to attend the performance,” Sen. John Kennedy (R-La.) said of House Speaker Nancy Pelosi.
“I think you’ve been, with all due respect and I love you, gaslighting, changing the subject," Rivera told his fellow Fox News personality.
"You cannot watch this testimony and say that it’s not a big deal," the Fox News anchor said.
The Fox News personality mocked police officers who testified about fending off violent Donald Trump supporters with a spoof awards ceremony.
The Department of Justice said the Alabama Republican's speech before the Capitol attack was "not within the scope" of his employment.
Four officers spoke of the physical and psychological wounds they sustained during the Capitol riot — a day some thought they wouldn't survive.
"Nothing, truly nothing, has prepared me to address those elected members of our government who continue to deny the events of that day," said Officer Michael Fanone.
The former first lady shared the "mantra I practice daily" after the champion gymnast withdrew from the team final at the Tokyo Olympics.